python-eel/Eel

Eel with threading doesn't recognize exposed functions.

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#703 opened on Oct 2, 2023

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help wanted

Description

*Describe the problem I am trying to start an Eel window then run the rest of main.py. Since eel.start() blocks the program, I used threading to run it separately. This works exactly how I want it to, except for a strange error. Whenever I run main.py, I get "AttributeError: module 'eel' has no attribute 'reload'" However, in VSCode, if I open the tab that contains index.html (without changing anything), then run main.py again, the program works perfectly.

Code snippet(s) Here is some code that can be easily used to reproduce the problem or understand what I need help with. `#guiLaunch.py

import eel

def Init(): eel.init('utils')

def OpenWeb(): eel.start('index.html')

def Reload(): eel.reload()`

`#utils/index.html

`#main.py

import threading import guiLaunch

guiLaunch.Init() t1 = threading.Thread(target=guiLaunch.OpenWeb()) t1.start()

#in while loop roughly every 5 seconds: eel.reload()`

I read through the documentation and saw the recommendation of eel.start('index.html', block=False) and eel.spawn(), but this caused the site that was opened to not be found.

Desktop

  • OS: Windows
  • Browser Chrome
  • Version Chrome 117.0.5938.132

Contributor guide

Tech stack
pythonjavascript
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Python threadingEel library basicsJavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate why eel.reload is not available when called from a different thread. Look at the eel module's internal state and how it handles threading. Check if the init or start method needs to be called in the same thread. Consider using eel.spawn() and ensuring the GUI thread is properly set up.